Thomas, H. A.  1901- <br/><br/>
Theory and design of valve oscillators for radio and other frequencies. 
With a foreword by Sir E. V. Appleton. 
 - 2d ed., rev. and enl. 
 - London,  Chapman & Hall,  1951. 
 - xv, 317 p.  diagrs.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TUBOS AL VACÍO<br/>OSCILADORES, CRISTAL
<br/><br/><label>Universal Decimal Class. No.: </label>621.396